Depending on how it's used in a sentence, "stumble" can be either a verb or a noun.
journey
adverb
what part of speech is work
i want to know what part of speech is camping
what part of speech is beneath
what part of speech is eleven
Stumbled is a verb in the past tense.
Appologise, correct yourself and carry on.
its the sound of the pistons stroking.
Use stumble in a sentence.
part of speech
The part of speech for this particular word is a noun.
adverb
what part of speech is work
what part of speech is beneath
the part of speech sashay is a averb
Did is a verb, and not is an adverb. Didn't is not any part of speech. It's a contraction of did and not.
Adjective